1. 创建用户
    1. create user 'jdxj'@'%' identified by 'pass';
    1. 创建数据库
    1. create database test_remote;
    1. 授权
    1. grant all privileges on test_remote.* to 'jdxj'@'%' with grant option;
    1. 刷新
    1. flush privileges;